Door-lock-mortising machine



' 1 1,633 37o June 21 1927. s. HUNTER DOORLOCK vMORTISJCNG MACHINE Filed July 5. 1925 3 Sheets-Sheet l l attenta 1,633'37 *June 21, 1927. s. HUNTER o DOORLOCK MORTI'SING MACHINE Filed July 5. 1923 I5 Sheets-Sheet 2 1,633,370 June 21 1927 s.v HUNTER DOORLOCK MORTIS ING MACHINE Filed July 5, 1923 5 Sheets-Sheet 3 nnnnnnnn m i 55m l zZ y l/ 56 57 5 d Y 114/ l l l 1 'Vl/fw J 16 55 y 2g y gwuvmtoz 47 'amuel Hunter Patented June 21, 1927.

STATES- sAMUEL HUNTER', or BELLEVUE., PENNSYLVANIA, Assrenon To warren enen WORKS, A coRroRATIoN oF PENNSYLVANIA.

DooRl-LocK-Mon'rlsiive MncHINE,

Application filed' July 5, 1923'. SerialNo'. 649,522.

This invention relates to door lock mortising machines and forv 'an objectto pro vide a device of improved typev emloodying new and improved mechanicalA features, functions and movements. Y

A further object ofthe invention is, to

provide in a door lock mortising machine improvedmeans for clearing the mortise of accumulated shavings andy cuttings.4

A further olojectof the invention is to provide improvedmeans oremployi'ng the bit for producing the mortiseand expanding the' bit for'producing the flange cut. i A `-further object of; .the invention is yto provide improved adjustable means` for varying the length of the'bit-carrying'shaft which is manually propelled.

A further objectv of the "invention is to provide improved mechanical 'means for carrying' out and carrying 'forward the several instrumentaliti'es above outlined. v'

`Witli theser and other objects in'4 view, the invention comprises ycertain novel parts, elements, units, combinations, arrangements, mechanical' movements, interactions i functions, asdisclosed Vin the drawings, together with mechanical and functional equivalents thereof, Vas will be hereinafter more fully described and' claimed.

In the drawings: I

.Figure l is a view in vertical section of the machine as applied yto a door witha lock mortisefcompl'etedll ".Figu'rle 9J isfa horizontal transverse sectional view taken" Online 2+2 of -Figure "1.

'Figure 13 isa view' ofl y machine in' side elevation attached 'to a door. 1 v Figure 4 is a view 'of' the machine yin top r Figure 5 is a view lof the machine ine'levatien, viewed from the edge normally ap pliedtothe door.` l A y Figure 6 is'aview of one of the project# ing'strips 'employedas la templet Ainl the marking or positionsy for boring transversely through the' m'ortise. 'Y

' Figure? is a'view of the bit nside elevation with the expanding screw remowed.y i' FigureS is a view Aof the bitindiametrical section shown attached to the' driving shaft, ralso ,in cliametrical Vsection'. l Figure. 9i a vi Vw yoit the' bit in diametrical sectin', similarly attachedl to tli'e'rdriving shaft lshown in position expanded" forp'rodujcing the `Harige and Figure 10 is a detail sectional viev of al modification of the inachi'ne. Like characters of reference indicate corresponding parts throughout the several views.

The improved door lock mortising machine, whichforms the subject matter of tl'iis"'app`lication, comprises a frame` composed of side bars lOf and 11, here sho-wn' as composed of tubes, it being understood', how'- ever, that tubesk are not essential to the pres# ent construction. These s'idebars l0' and 11i-gare joined by a yokelQa't' the top andan equivalent yoke 13' at the bottom', the connection being by any approved" means, as torfinstance the screws 14;

The'frame thusv constructed is adapted to be secured rigidly tothefedge of door, shown conventionally at 15'intoV which a lockinortise 16l is' to be formed. The attaching :means for' the fra-me compri-ses lselfce'iitering'jaw members' 17" and 18 connected with they upper yoke and similar jaw`1`nem'- bers 19 and 2@ lconnected with the lower yoke. lThe connection' is" by means of a right and'il'eft' screw QI for the upper jaws and 22fo`r the lower jaws, provided respectively'with hand wheels 23 and 24.' Thefu'p.- per jaws 17 and 18 slide upon av guide pin 25 and the lower' jaws upon a similar guide p'in'ac Seniat, 'in conju'ction 'with the screws Q1 and 22,'s'ucl1-jaws' are always maintained in parallelism and 'properly centered relative to; the frame'. By'the manipulation' of the hand wheels 23 and' 24,' 'the' jaws are, therefore, actuated to clamp upon the' edge of the doorfa's indicated. To prevent` marthedoorby theu'se of the jaws in' the usual i'vellx known manner, a strip Q7v of Asome yielding' material, such as wood, is carried by the'ffj aw members' extending between the upper and lowerjaws and aA strip 28'upon the" opposite sfide" ot somev material, suchy as paste'boardf ofthe like'.

The strip?? is' provided with a scale, in#

ico

will be determined for each particular job. Then the device is in place upon the door, therefore, by merely marking as indicated by the templet 28, the proper position for the transverse borings is provided.

Slidable upon the guide bars 10 is a gear housing 35, bevel gears 36 and 37 being located within said housing, the latter being connected by means of a shaft 38 with a pinion 39 intergeared with the internal gear 40 of the wheel 41. The wheel 41 is ralso journaled at 42 upon the gear housing 35 and is provided with means for driving the same, indicated as the crank 43.

The gear 36, intergeared with the gear 37, driven as justdescribed, is mounted upon a sleeve 44 extending through the gear housing, carrying at one end a balance wheel 45 and at its opposite end a collar 46, which, coacting, retain the sleeve 44 in its position extending through the gear casing.

Slidabfe through the sleeve 44 is the bit driving shaft 47 provided with a spline groove 48 extending longitudinally thereof, a feather 49 being` carried by the sleeve 44 to prevent rotation of the shaft 47 relative to the sleeve 44, but permitting longitudinal movement thereof.

To effect such longitudinal movement, a manually pressed head 50 is mounted to rotate freely relative to said shaft and is pref erably provided for varying the length of the shaft by mounting the head 50 upon a sleeve 51 with a bayonet joint connection between said sleeve and shaft shown as providing an offset 52 at the end of the spline groove 48` with a pin 53 carried by the sleeve engaging in said slot so that, by rotating the sleeve 51 to disengage it from the offset 52, it may be moved longitudinally with the pin 53 moving in the spline slot 48 to shorten the combined length of the shaft and sleeve or by drawing outwardly and engaging in the offset 52 to increase such length. Y

The drive shaft 47 is provided with a clearing worm 54 and has a bit inserted into the working end. of said shaft. This bit is provided preferably with a screw-threaded shank 55 engaging within a complementary socket in the end of the shaft 47 In general makeup, the bit is of a general router type but is slitted at 56 and threaded internally at 57 so that a tapered screw 58 inserted into the socket 57 will serve to eX- pand the sides 59 of the bit. This provides for employing the bit at its minimum ydiameter for boring into the edge of the door.

For producing an elongated cut for mortising effect, a rack 60 is rigidly secured to the top of the gear housing 35and engages a pinion 61 carried upon' a shaft 62 which is journaled in ears 63, preferably formed integral with the upper yoke12. To this shaft u 62, a crank arm 64 is attached so that, by

manipulating the crank 64 and rotating the shaft 62 and pinion 61, the gear casing and its connected and associated parts are raised and lowered. For limiting the movement of these parts to produce a mortise of exactly the right dimensions, stops 65 and 66 are provided, preferably in the form of screws, with knurled heads 67 and 68 respectively and lock nuts 69 and 70 whereby the limitations provided by the screws 65 and 66 may be maintained throughout its continued use.

Secured also to the gear housing is a defiector plate 71 upon which the shavings and 'cuttings'` indicated at 72, are deposited by the clearance worm 54 and discharged at one side of the machine and out of the way of the user. It will also lbe noted that the gear casing 35 is wholly enclosed and provision, therefore, made for containing a lubricant, indicated at 73, so that the gears 36 and 37 run in oil. f

In operation, it will be understood that the device is clamped upon the edge of the door, the position of the machine being pref determined by setting the pointer 30V to coincide with some knownpart of the door structure. It is obvious that machines 0f this general type will be used upon construction operations embodying a very large number of doors of similar make and requiring similar treatment and the position of a lock mortise rela-tive to some particular part of the door structure having once been determined, the pointer 30 is set whereupon all measurements are eliminated, the device being simply placed upon the door with the pointer 30 coinciding with some part of the structure and there clamped.

In its initial position, the bit will b'eat the oute-r edge of the door and the driving shaft 47 extend rearwardly to its limit. The driving wheel 41 is now` rotated in any approved manner, as by the use of the crank 43, and ythrough the gearing 37 and 36, the shaft 47l is driven with great speed. The bit is now forced into the wood of the door such a distance as practice will indicate as desirable, whereupon the rotation of the bit being continued,the gear casing and its associated parts, including the bit, will be moved upwardly and downwardly, the bit being fed in manually as the cutting progresses by pressing with the breast or other part of the'body against the head'50.

In the type of feeding device shown at Figure 10, the hub is omitted from the wheel 45 and a sleeve A is preferably removably secured to the wheel and forms a 1guideway for the shaft 47. This shaft 47 in this particular modification isl pro` vided with a' rack B which is also preferably` formed upon the shaft opposite the splined lgroove. Y i

For cooperation with the rack B, a pawl C is provided pivoted at D to spaced cheek ino plates formed integral with the sleeve A. To hold the pawl C in properoperative relation, a spring E is provided.

At times it is desirable to provide means whereby the shaft 47 shallvbe free to move in both directions. For this purpose an eccentric F is arranged to bear upon the pawl C, a linger member G being provided for engagement by the hand of the operator to rotate the eccentric F to raise the pawl C out of engaging position.

With the device as shown therein, the breast or other part of the user will exert pressure as in the other types, advancing the shaft 47 one or more 4steps of the rack B which will be engaged by the pawl C and retained in that position so that it is unnecessary for the operator to maintain the pressure constantly.

In operation, ordinarily, the crank 43 will be manipulated by the right hand of the operator and the crank 64 by the left hand, the left hand producing the motion of raising and lowering the machine, the right hand producin'g the rotary motion for borm0'.

Iefore beginning the boring, the collar 74 upon the. shaft is adjusted. To adjust this, the screw 75 is loosened and the collar moved vbackwardly along the shaft. The lock which is to be inserted in the mortise when completed is now inserted between this collar and the hub of the wheel 45 and the collar secured in that position thus conveniently insuring the correct depth of the mortise. The collar 74 is merelya stop for limiting the inward movement of t-he shaft 47 as described and performs no function except to stop the work when a. mortise of suticient depth has been produced. i

At the outset, it is usually found desirable to have the shaft 47 as short as convenient which is accomplished by sliding the sleeve 5l inwardly along the shaft, but as the boring progresses it is desirable to y lengthen the shaft, whereupon the sleeve 5l is moved outwardly and the pin 53 engaged in the offset slot 52.

The operation of the bit in the mortise, obviously, will produce cuttings which will drop down to the bottom of the mortise producedand, as the device descends in its downward out, the loose shavings and cuttings are engaged bythe worm 54 and removed and ejected from the mortise.

When themortise has been completed by the inal out, in which position the collar 74 has engaged the hub of the wheel 45, the clearance worm 54 has wholly cleared the mortise of all shavings and cuttings so that the mortise presents an absolutely clean cavity. This cavity having been produced, the bit is expanded from the size and relation shown at Figure 8 -to the size and relation shown at Figure 9, producing a cut of greater diameter than the original cut, whereby the flange cut 76, as shown in the drawings, is produced, it being understood that 'this flange cut may be made either preceding orsucceeding the cutting of the mortise. In case it precedes, the initial cut is by the use of the expanded bit and the bit is then reduced to its smaller diameter for cutting the mortise. It is also obvious, of course, that bits of different diameters may be inserted in the end of the shaft 47 instead of expanding the bit as shown, whereby the mortise and the kflange cut may be produced by different bits.

It is also obvious that bits of different diameters may be employed, either of the rigid type or expanding type, fory producing mortises of different widths.

The mortise having been completed to- C gether with its flange out, the position for the door knob and key hole are marked by using the templet 28 whereupon the ma chine is removed from the door by again manipulating the hand wheels 23 andv24 and the operati-on repeated upon` another door.

What I claimV to be new and desire to secure by Letters Patent is:

A door mortising machine, comprising a frame, means for clamping the frame in position, a driving mechanism slidable along the frame, a boring shaft carried by the driving mechanism, said shaft comprising a. section having a lshallow spiral groove, and a spline groove extending along the shaft, including said section, a feather carried by the driving mechanism engaging said spline groove, and a boring tool carried by the end of the shaft, said tool compris' ing a pair of opposing curved blades adapted to cut upon their front edge and also upontheir side edges, and said shaft being of a diameter approximating that of the tool. e

- In testimony whereof I aiiix my signature.

SAMUEL HUNTER.

lll). 

